ALCO RSD-4

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ALCO RSD-4
Kennecott Copper Company Locomotive 201 - 1.jpg
Kennecott Copper Corporation locomotive 201 on display at Snoqualmie Depot, Snoqualmie, Washington
Type and origin
Power typeDiesel-electric
BuilderALCO
ModelRSD-4 (Specification E1663)
Build date1951–1952
Total produced36
Specifications
Configuration:
 • AARC-C
Gauge4 ft 8 12 in (1,435 mm) standard gauge
TrucksALCO trimount
Wheel diameter40 in (1,000 mm)
Minimum curve21° (274.37 ft or 83.63 m)
Wheelbase42 ft 3 in (12.88 m)
Length56 ft 6 in (17.22 m)
Width10 ft 1 78 in (3.096 m)
Height14 ft 5 14 in (4.401 m)
Loco weight278,860 lb (126,490 kg)
Fuel capacity800 US gal (3,000 L)
Prime moverAlco 244
RPM range1000 (max)
Engine typeV12 Four-stroke engine diesel
AspirationTurbocharger
Displacement8,016 cu in (131.36 L)
GeneratorGE 5GT-581A1
Traction motors(6) GE 5GE752-C1
Cylinders12
Cylinder size9 in × 10.5 in (229 mm × 267 mm)
Performance figures
Power output1,600 hp (1.2 MW)
Tractive effort69,700 lb (31,600 kg)
Kennecott Copper Corporation locomotive 201 on display at Snoqualmie Depot, Snoqualmie, Washington.

The ALCO RSD-4 was a diesel-electric locomotive of the road switcher type rated at 1,600 horsepower (1.2 MW), that rode on three-axle trucks, having a C-C wheel arrangement.

Used in much the same manner as its four-axle counterpart, the ALCO RS-3, though the six-motor design allowed better tractive effort at lower speeds. Due to the inadequate capacity of the main generator, this model was later superseded in production by the ALCO RSD-5

Original owners[edit]

Railroad Quantity Road Numbers Notes
Atchison, Topeka and Santa Fe Railway
10
2100–2109
Chicago and North Western Railway
5
1515–1517, 1619–1620
Central Railroad of New Jersey
14
1601–1614
Kennecott Copper Corporation
1
201
Preserved
Utah Railway
6
300–305
Total 36

Preserved units[edit]

The only ALCO RSD-4 that has survived is Kennecott Copper Corporation #201; as of 2007, it resides in fully restored condition at the Northwest Railway Museum (formerly known as the Puget Sound & Snoqualmie Valley Railway) in Snoqualmie, Washington, wearing a coat of bright orange paint.

References[edit]

  • Dorin, Patrick C. (1972). Chicago and North Western Power. Burbank, California: Superior Publishing. p. 141. ISBN 0-87564-715-4.
  • Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. p. 247. ISBN 978-0-89024-026-7.